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[Percutaneous radiotherapy in thyroid malignancies--curative and palliative viewpoints].
Strahlentherapie
|June 1, 1984
Summary
Histologic differentiation is key for thyroid cancer survival. Well-differentiated tumors show long survival with radiotherapy, while dedifferentiated tumors have poor outcomes, suggesting surgery may be better for advanced cases.
Area of Science:
- Oncology
- Radiotherapy
- Endocrinology
Context:
- Retrospective analysis of 85 patients with thyroid malignomas treated between 1972 and 1979.
- Patients received percutaneous radiotherapy for curative (49) or palliative (36) purposes.
- Radiotherapy techniques included pendulum, oblique-field, stationary-field, and contralateral irradiation.
Purpose:
- To evaluate the treatment outcomes of percutaneous radiotherapy for thyroid malignomas.
- To identify prognostic factors influencing survival in thyroid cancer patients.
- To compare the efficacy of radiotherapy versus surgery for advanced or anaplastic thyroid tumors.
Summary:
- Prognosis and survival are strongly correlated with histologic differentiation, not tumor size or patient age.
- Well-differentiated thyroid malignomas demonstrated survival of several years, irrespective of tumor extent.
- Dedifferentiated thyroid tumors had an average survival of only four months, with worse outcomes for inoperable anaplastic tumors.
Impact:
- Highlights the critical role of histologic differentiation in predicting thyroid cancer prognosis.
- Suggests percutaneous radiotherapy may be less effective for dedifferentiated and anaplastic thyroid tumors.
- Recommends considering palliative surgical measures for inoperable or anaplastic thyroid malignomas over radiotherapy.